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Filtering slot antenna with directional characteristic

A technology of directional characteristics and slot antenna, which is applied in the direction of antenna, antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of high cost, independent antenna and large filter size, etc.

Pending Publication Date: 2021-04-30
XIAN UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention proposes a filter antenna structure with directional characteristics, aiming to solve the problems of large size and high cost of the independent antenna and filter in the traditional radio frequency front end, and at the same time, the antenna has better out-of-band suppression effect and airspace anti-interference ability

Method used

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  • Filtering slot antenna with directional characteristic
  • Filtering slot antenna with directional characteristic
  • Filtering slot antenna with directional characteristic

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] refer to figure 1 , the top surface (top) of the dielectric substrate is provided with a feeding microstrip line 1, and the backside (bottom) metal layer of the dielectric substrate is provided with a defective structure 6; the defective structure is composed of a plurality of slots (grids) Right) cascade formation. In order to more intuitively reflect the positional relationship between the feed microstrip line 1 and the defect ground structure 6, figure 1 It is distinguished by shades of gray.

[0037] On the top surface of the dielectric substrate 2, one end of the feeding microstrip line 1 is connected to one side edge of the dielectric substrate 2 as a signal input end, and the other end of the feeding microstrip line 1 is connected to the other side of the dielectric substrate 2. There is distance at the edge.

[0038] The mi...

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Abstract

The invention discloses a filtering slot antenna with a directional characteristic. The antenna comprises a dielectric substrate, a feed microstrip line is arranged on the top surface of the dielectric substrate, an open slot and a defected ground structure are arranged on the back surface of the dielectric substrate to form a special radiation structure, and the open slot and the defected ground structure are coupled with the feed microstrip line to form a filtering resonance characteristic; and a guide terminal is arranged on the back surface of the dielectric substrate and close to the open slot. According to the slot antenna, the defected ground structure is introduced through the complicated slot, so that the filtering characteristic of the slot antenna and the suppression of an out-of-band signal are realized, the directional characteristic of the filtering slot antenna is realized through the introduction of the guide terminal, and the airspace anti-interference capability is improved. The antenna can be used for arraying and applied to the broadband fields of target detection, target tracking, short-distance wireless communication and the like.

Description

technical field [0001] The invention belongs to the technical field of microstrip antennas, and relates to a filter slot antenna with directional characteristics. Background technique [0002] With the development of wireless communication technology, broadband communication technology has been well developed in recent years. As an important part of broadband communication, broadband antenna has been extensively studied. [0003] In actual engineering applications, the wider bandwidth is easily affected by some interference signals outside the band. The interference signal is divided into in-band interference and out-of-band interference. The introduction of interference signal into the received signal will seriously affect the receiving performance of the receiver. In traditional engineering applications, a band-pass filter is usually connected in series behind the receiving antenna to suppress the interference of out-of-band signals. However, having the antenna and filte...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q23/00
CPCH01Q1/50H01Q23/00H01Q1/38
Inventor 杨海龙李容基李绪平张运启
Owner XIAN UNIV OF POSTS & TELECOMM
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